Twin Fans - Roof Mounted

The Helios Twin roof fans have been specifically designed for continuous ventilation in commercial buildings with internal toilets or toilets that have no opening. All units in the range have two direct drive centrifugal fans with an individual back draught shutter & separate electrical connections to the terminal, ensuring 100% standby. For noise sensitive applications the acoustically lined units (TFDA) provide the ideal solution. Roof mounted models offer a weasther protected unit with outlet louvres and a rear mounted inlet spigot for circular ducting.

Prices include VAT but exclude delivery

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Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit inlet duct sizes from 125mm to 250mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm. Roof mounted units are weatherproof.

Available models:
TFR 125mm duct size
@ £752
TFR 150mm duct size @ £857
TFR 160mm duct size @ £857

TFR 200mm duct size @ £1044
TFR 250mm duct size @ £1173

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

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Acoustically lined for noise sensitive applications. Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit inlet duct sizes from 125mm to 250mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm. Roof mounted units are weatherproof.

Available models:
TFRA 125mm duct size
@ £758
TFRA 150mm duct size @ £870
TFRA 160mm duct size @ £870
TFRA 200mm duct size @ £1093
TFRA 250mm duct size @ £1198

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

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Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit inlet duct sizes from 315mm to 500mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm. Roof mounted units are weatherproof.

Available models:
TFR 315mm   inlet  duct size @ £1300
TFR 355mm A inlet duct size @ £1403
TFR 355mm B inlet duct size @ £1393
TFR 355mm Cinlet duct size  @ £1403
TFR 400mm A inlet duct size @ £1528
TFR 400mm B inlet duct size @ £1528
TFR 450mm  inlet  duct  size @ £1636
TFR 500mm  inlet  duct  size @ £1753

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

Quantity:
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Acoustically lined for noise sensitive applications. Supplied with circular spigot connection. The twin centrifugal in line, single phase 240v fans with back draught shutters provide 100% stand by for toilet extract systems. Available to suit inlet duct sizes from 315mm to 500mm and fully speed controllable. A changeover panel (accessory ACSW 2) will be required to proved the automatic changeover in the event of fan failure using current sensing or airflow switch, with visual and audible alarm. Roof mounted units are weatherproof.

Available models:

TFRA 315mm    @ £1393
TFRA 355mm A @ £1477
TFRA 355mm B @ £1477
TFRA 355mm C @ £1477
TFRA 400mm A @ £1631
TFRA 400mm B @ £1631
TFRA 450mm    @ £1734
TFRA 500mm    @ £1889

Click on left thumbnail for a model comparison chart with further technical specifications on the right.
Downloadable Catalogue Pages & Installation Instructions.

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Automatic change over of twin fans using current sensing or via a flow switch. Duty sharing (8 selections from 3 to 24 hours), manual selection, variable overloads, visual and audible alarm and alarm output for BMS.

ACSW 2 Change over panel @ £ 219

Protection: IP 40
Current: Max. 8 Amps
Dim. mm W 180 x H 120 x D 60

Electronic Speed controller ESA. IND for surface mounting. See thumbnail for dimensions.

ESA 3i  -  3 amp speed controller  @ £80
ESA 6i  -  6 amp speed controller  @ £120
ESA 10i - 10 amp speed controller @ £253

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A quick-fix method for connecting fans to ducting, reducing vibration transmission. When installing leave a small gap between spigot and ducting. Supplied in pairs.

Sizes Available: BM 125mm to BM 315mm

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Spigotted attenuator with 50mm insulation. Fits normal size ducting or to be fixed with pipe clamp connectors. Various sizes from 125mm to 400mm duct size.

Available models:
SRSD 125/600 Silencer  @ £97
SRSD 150/600 Silencer  @ £98
SRSD 160/600 Silencer  @ £102
SRSD 200/600 Silencer  @ £106
SRSD 250/600 Silencer  @ £125
SRSD 315/600 Silencer  @ £149
SRSD 355/600 Silencer  @ £172
SRSD 400/600 Silencer  @ £184

 

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